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release-9
Code/ThirdParty/Lua/llimits.h
323 строки
8 KB
Sanakan8472
Updated version of Lua to Version: 5.3.5 - 2018-06-26 -unmodified-
04 июн 2019, 22:47
04 июн 2019, 22:47
96d65f3
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/* ** $Id: llimits.h,v 1.141.1.1 2017/04/19 17:20:42 roberto Exp $ ** Limits, basic types, and some other 'installation-dependent' definitions ** See Copyright Notice in lua.h */ #ifndef llimits_h #define llimits_h #include <limits.h> #include <stddef.h> #include "lua.h" /* ** 'lu_mem' and 'l_mem' are unsigned/signed integers big enough to count ** the total memory used by Lua (in bytes). Usually, 'size_t' and ** 'ptrdiff_t' should work, but we use 'long' for 16-bit machines. */ #if defined(LUAI_MEM) /* { external definitions? */ typedef LUAI_UMEM lu_mem; typedef LUAI_MEM l_mem; #elif LUAI_BITSINT >= 32 /* }{ */ typedef size_t lu_mem; typedef ptrdiff_t l_mem; #else /* 16-bit ints */ /* }{ */ typedef unsigned long lu_mem; typedef long l_mem; #endif /* } */ /* chars used as small naturals (so that 'char' is reserved for characters) */ typedef unsigned char lu_byte; /* maximum value for size_t */ #define MAX_SIZET ((size_t)(~(size_t)0)) /* maximum size visible for Lua (must be representable in a lua_Integer */ #define MAX_SIZE (sizeof(size_t) < sizeof(lua_Integer) ? MAX_SIZET \ : (size_t)(LUA_MAXINTEGER)) #define MAX_LUMEM ((lu_mem)(~(lu_mem)0)) #define MAX_LMEM ((l_mem)(MAX_LUMEM >> 1)) #define MAX_INT INT_MAX /* maximum value of an int */ /* ** conversion of pointer to unsigned integer: ** this is for hashing only; there is no problem if the integer ** cannot hold the whole pointer value */ #define point2uint(p) ((unsigned int)((size_t)(p) & UINT_MAX)) /* type to ensure maximum alignment */ #if defined(LUAI_USER_ALIGNMENT_T) typedef LUAI_USER_ALIGNMENT_T L_Umaxalign; #else typedef union { lua_Number n; double u; void *s; lua_Integer i; long l; } L_Umaxalign; #endif /* types of 'usual argument conversions' for lua_Number and lua_Integer */ typedef LUAI_UACNUMBER l_uacNumber; typedef LUAI_UACINT l_uacInt; /* internal assertions for in-house debugging */ #if defined(lua_assert) #define check_exp(c,e) (lua_assert(c), (e)) /* to avoid problems with conditions too long */ #define lua_longassert(c) ((c) ? (void)0 : lua_assert(0)) #else #define lua_assert(c) ((void)0) #define check_exp(c,e) (e) #define lua_longassert(c) ((void)0) #endif /* ** assertion for checking API calls */ #if !defined(luai_apicheck) #define luai_apicheck(l,e) lua_assert(e) #endif #define api_check(l,e,msg) luai_apicheck(l,(e) && msg) /* macro to avoid warnings about unused variables */ #if !defined(UNUSED) #define UNUSED(x) ((void)(x)) #endif /* type casts (a macro highlights casts in the code) */ #define cast(t, exp) ((t)(exp)) #define cast_void(i) cast(void, (i)) #define cast_byte(i) cast(lu_byte, (i)) #define cast_num(i) cast(lua_Number, (i)) #define cast_int(i) cast(int, (i)) #define cast_uchar(i) cast(unsigned char, (i)) /* cast a signed lua_Integer to lua_Unsigned */ #if !defined(l_castS2U) #define l_castS2U(i) ((lua_Unsigned)(i)) #endif /* ** cast a lua_Unsigned to a signed lua_Integer; this cast is ** not strict ISO C, but two-complement architectures should ** work fine. */ #if !defined(l_castU2S) #define l_castU2S(i) ((lua_Integer)(i)) #endif /* ** non-return type */ #if defined(__GNUC__) #define l_noret void __attribute__((noreturn)) #elif defined(_MSC_VER) && _MSC_VER >= 1200 #define l_noret void __declspec(noreturn) #else #define l_noret void #endif /* ** maximum depth for nested C calls and syntactical nested non-terminals ** in a program. (Value must fit in an unsigned short int.) */ #if !defined(LUAI_MAXCCALLS) #define LUAI_MAXCCALLS 200 #endif /* ** type for virtual-machine instructions; ** must be an unsigned with (at least) 4 bytes (see details in lopcodes.h) */ #if LUAI_BITSINT >= 32 typedef unsigned int Instruction; #else typedef unsigned long Instruction; #endif /* ** Maximum length for short strings, that is, strings that are ** internalized. (Cannot be smaller than reserved words or tags for ** metamethods, as these strings must be internalized; ** #("function") = 8, #("__newindex") = 10.) */ #if !defined(LUAI_MAXSHORTLEN) #define LUAI_MAXSHORTLEN 40 #endif /* ** Initial size for the string table (must be power of 2). ** The Lua core alone registers ~50 strings (reserved words + ** metaevent keys + a few others). Libraries would typically add ** a few dozens more. */ #if !defined(MINSTRTABSIZE) #define MINSTRTABSIZE 128 #endif /* ** Size of cache for strings in the API. 'N' is the number of ** sets (better be a prime) and "M" is the size of each set (M == 1 ** makes a direct cache.) */ #if !defined(STRCACHE_N) #define STRCACHE_N 53 #define STRCACHE_M 2 #endif /* minimum size for string buffer */ #if !defined(LUA_MINBUFFER) #define LUA_MINBUFFER 32 #endif /* ** macros that are executed whenever program enters the Lua core ** ('lua_lock') and leaves the core ('lua_unlock') */ #if !defined(lua_lock) #define lua_lock(L) ((void) 0) #define lua_unlock(L) ((void) 0) #endif /* ** macro executed during Lua functions at points where the ** function can yield. */ #if !defined(luai_threadyield) #define luai_threadyield(L) {lua_unlock(L); lua_lock(L);} #endif /* ** these macros allow user-specific actions on threads when you defined ** LUAI_EXTRASPACE and need to do something extra when a thread is ** created/deleted/resumed/yielded. */ #if !defined(luai_userstateopen) #define luai_userstateopen(L) ((void)L) #endif #if !defined(luai_userstateclose) #define luai_userstateclose(L) ((void)L) #endif #if !defined(luai_userstatethread) #define luai_userstatethread(L,L1) ((void)L) #endif #if !defined(luai_userstatefree) #define luai_userstatefree(L,L1) ((void)L) #endif #if !defined(luai_userstateresume) #define luai_userstateresume(L,n) ((void)L) #endif #if !defined(luai_userstateyield) #define luai_userstateyield(L,n) ((void)L) #endif /* ** The luai_num* macros define the primitive operations over numbers. */ /* floor division (defined as 'floor(a/b)') */ #if !defined(luai_numidiv) #define luai_numidiv(L,a,b) ((void)L, l_floor(luai_numdiv(L,a,b))) #endif /* float division */ #if !defined(luai_numdiv) #define luai_numdiv(L,a,b) ((a)/(b)) #endif /* ** modulo: defined as 'a - floor(a/b)*b'; this definition gives NaN when ** 'b' is huge, but the result should be 'a'. 'fmod' gives the result of ** 'a - trunc(a/b)*b', and therefore must be corrected when 'trunc(a/b) ** ~= floor(a/b)'. That happens when the division has a non-integer ** negative result, which is equivalent to the test below. */ #if !defined(luai_nummod) #define luai_nummod(L,a,b,m) \ { (m) = l_mathop(fmod)(a,b); if ((m)*(b) < 0) (m) += (b); } #endif /* exponentiation */ #if !defined(luai_numpow) #define luai_numpow(L,a,b) ((void)L, l_mathop(pow)(a,b)) #endif /* the others are quite standard operations */ #if !defined(luai_numadd) #define luai_numadd(L,a,b) ((a)+(b)) #define luai_numsub(L,a,b) ((a)-(b)) #define luai_nummul(L,a,b) ((a)*(b)) #define luai_numunm(L,a) (-(a)) #define luai_numeq(a,b) ((a)==(b)) #define luai_numlt(a,b) ((a)<(b)) #define luai_numle(a,b) ((a)<=(b)) #define luai_numisnan(a) (!luai_numeq((a), (a))) #endif /* ** macro to control inclusion of some hard tests on stack reallocation */ #if !defined(HARDSTACKTESTS) #define condmovestack(L,pre,pos) ((void)0) #else /* realloc stack keeping its size */ #define condmovestack(L,pre,pos) \ { int sz_ = (L)->stacksize; pre; luaD_reallocstack((L), sz_); pos; } #endif #if !defined(HARDMEMTESTS) #define condchangemem(L,pre,pos) ((void)0) #else #define condchangemem(L,pre,pos) \ { if (G(L)->gcrunning) { pre; luaC_fullgc(L, 0); pos; } } #endif #endif